-
identified under magnification (600×) by
their characteristic granular exines bearing three con****uous pores.
Corylus has
around 14–18 species. The cir****scription...
- in
volatiles and
relatively rich in hydrogen, that is
represented by the
exines of spores. C.A.
Seyler in 1932, however, used the term with its present...
-
shape and form a
resistant outer wall
called the
exine and an
inner wall
called the intine. The
exine is what is
preserved in the
fossil record. Two basic...
- One
characteristic which most
species in this
group share is a lack of an
exine, or
protective layer,
around the
pollen grain. Paul
Knuth identified two...
- (2023).
Evidence from
concentrations of UV-B–absorbing
compounds in the
exine of
fossil pollen from the Qubu
section in
southern Tibet (China), interpreted...
- is a
biological polymer found as a
major component of the
tough outer (
exine)
walls of
plant spores and
pollen grains. It is
chemically very
stable (one...
-
binucleate pollen,
which has a
thicker exine and the
second is
trinucleate pollen,
which has a
thinner exine.
Binucleate pollen has a
higher lifespan...
- of
Fatty Acids and is
Required for
Anther Cutin Biosynthesis and
Pollen Exine Formation in Rice". The
Plant Cell. 22 (1): 173–190. doi:10.1105/tpc.109...
-
inferior ovary,
pollen grains without distinctive aperture but with a
reduced exine layer and an
elaborated intine layer,
nuclear endosperm development, and...
-
annulus or disk at the top of the
achene beak. In some
pollen grains, the
exine around the
apertures is
either thicker or thinner. In pores, this border...
